エポキシモールド絶縁システム中の人工ボイド内部分放電現象の検討

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2011/09/01

タイトル(英語): Investigation of Partial Discharge Phenomena in Artificial Cavity in Epoxy Cast Resin Insulation System

著者名: 高田　一（九州工業大学），林　昌幸（九州工業大学），小迫　雅裕（九州工業大学），匹田　政幸（九州工業大学），中村　修平（三重大学），梅村　時博（三重大学），中村　勇介（(株) 東芝 電力・社会システム技術開発センター），広瀬　達也（(株) 東芝 電力・社会システム技術開発センター），東山　雅一（東芝産業機器製造（株））

著者名(英語): Hajime Takada (Kyushu Institute of Technology), Masayuki Hayashi (Kyushu Institute of Technology), Masahiro Kozako (Kyushu Institute of Technology), Masayuki Hikita (Kyushu Institute of Technology), Shuhei Nakamura (Mie University), Tokihiro Umemura (Mie University), Yusuke Nakamura (Power and Industrial Systems Research and Development Center, TOSHIBA Co., Ltd.), Tatsuya Hirose (Power and Industrial Systems Research and Development Center, TOSHIBA Co., Ltd.), Masakazu Higashiyama (TOSHIBA Industrial Products Manufacturing Co., Ltd.)

キーワード: モールド変圧器，部分放電，ボイドサイズ，電荷量，エポキシ樹脂，X線照射　　cast resin transformer，partial discharge，void size，charge，epoxy resin，X-ray irradiation

要約(英語): It is crucial for proper insulation design of cast resin transformer to consider voids and delamination which might exist in cast molding because of several surface boundaries between resin and conductor. Such defects in the insulator lead to reduction of the life of the apparatus. In this report, we investigate the relation between the void size and apparent charge of partial discharge (PD) occurring in a model simulating the insulation system of cast resin transformer. It is also important to determine necessary PD detection sensitivity of PD test in a factory as well as in a field. In this paper, we also discuss the detection sensitivity by considering the relation between charge and void radius using formula derived by L. Niemyer, M. Pedersen and their colleagues in the late 1980's to apply to the case of the cast resin transformer. Experiments were also performed to obtain PD inception voltage (PDIV) of epoxy resin slab including an artificial void with a given size. Investigation was also made on the effect of X-ray irradiation to the epoxy resin on PDIV characteristics.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.131 No.9 （2011） 特集：自然災害軽減のための電磁界技術

本誌掲載ページ: 785-791 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/131/9/131_9_785/_article/-char/ja/